Pipe-wrapping machine



July 8 1924. 1.500,?69

L. S ROSENER ET AL PIPE WRAPPING MACHINE Filed June 27, 1922 3 Sheets-Sheet 1 M ATTORNEYS.

July 8 1924. 1500,769

L. s. ROSENER ET AL PIPE WRAfPING MACHINE IN VEN TORS "Of/less Z e/andj Fosene/ mm flan/r Deane W ATTOK 'EYS.

July 8 1924. l.500,769

L. s. ROSENER ET AL P1 P13 WRAPPING MACHINE Filed June 27. 1922 3 Sheets-Sheet 3 IN V EN TORJ [Ml/revs. le/and .S flvener frank Door/e BY m 5% as 741,) ATTORNEYS.

Patented July 8, 1924.

UNITED STATES PATENT OFFICE.

LELAND S. ROSENER, OF SAN FRANCISCO, AND FRANK I. DOANE, OF BERKELEY,

CALIFORNIA, ASSIGNORS TC THEVPA CISCO, CALIFORNIA, A CORPORATION RAFFINE COMPANIES, INC., OF SAN FRAN- OF DELAWARE.

PIPE-WRAPPIN G MACHINE.

Application filed June 27, 1922. Serial No. 571,198.

To all whom it may concern:

Be it known that we, LELAND S. RosnNnn and FRANK I. DOANE, citizens of the United States of America, and residents, respec tively, of the city and county of San Francisco, and Berkeley, county of Alameda, State of California, have invented a new and useful Pipe-Wrapping Machine, of which the following is a specification.

Our invention relates to pipe wrapping devices. One of the objects of the invention is the provision of an improved pipe wrapping machine in which the pipe is rotate-d and fed forwardly thru the machine by the same feed rollers. Another object of the invention is the provision of a pipe wrapping machine in which the ratio between the s eed of rotation and the speed of longitudinal movement of the pipe may be readily adjusted to determine the pitch of the spiral characterizing the strip of covering as it is rolled upon the pipe.

Our invention possesses other objects and features of advantage, some of which, with the foregoing, will be set forth in the following description of our invention. It is to be understood that we do not limit ourselves to the showing made by the said description, as we may adopt variant forms of the invention within the scope of the claims.

In the drawings, Fig. 1 is a front elevation of the machine, portions of the structure being broken away. tional view of a portion of the machine, the plane of section being indicated by the line 2-2 of Fig. 1. Fig. 3 is a plan view of the machine.

In terms of broad inclusion, our invention comprises a machine in which a pipe may be covered by a strip wound helically thereon. The end of the strip is applied at an angle to the pipe, and the pi rotated and at the same time fed forward y, so that the strip is drawn upon the pipe. The pipe is rotated and fed thru the machine by a plurality of feed rollers, which are mounted for pivotal movement about an axis perpendicular to their axis of rotation, and means are provided for moving the rollers on their res ective pivotal axes so as to adjust the ratio'between the speed of rotation and the speed of axial movement of the pipe. If the axis of rotation of the feed rollers is Fig. 2 is a sec-' parallel to the axis of the pipe, rotation of the feed rollers will effect merely a rotation of the pipe, but if the rollers are turned out of such parallelism, each in equal degree, the pipe is not only rotated but fed forwardly as well, and the ratio between these two movements, that is to say, the pitch of the spiral described by a given point on the surface of the pipe depends on the an ularity of the adjustment. If the feed rol ers are turned to an angle of 90 from the first position so that the rollers are turning in a plane coincident with the axis of the pipe. no rotary movement is given to the pipe, but only axial movement.

Means are also provided for simultaneously driving the feed rollers; for permitting radial adjustment toward and from the axis of the plpe to accommodate different sizes of pipe; for simultaneously adjusting the angularity of the feed rollers to the axis of the pipe; for feeding a strip of wrapping material to the pipe: and for impregnating the wrapping material with a waterproof composition. such as asphalt, immediately before the wrapping material reaches the pipe;

More particularly, our machine comprises a frame of which the chief parts are a pod estal 2, and preferably three radial extensions 3,. rojecting from a central barrel 4. In each rame portion 3, a hollow shaft 6 is mounted for pivotal movement about the axis 7, which extends radially from the axis 8, passing thru the center of the barrel 4 and coincident with the axis of rotation 9 of the pipe 10.

Mounted for axial movement in the hollow shaft 6, but not rotatable therein because of the key 11, is a hollow shaft 12 provided with threads 13 and carrying a hand wheel 14 threaded thereon. A coil s ring 16 is interposed between the hand whee and a bridge plate 17 The hand wheel bears on one side against a portion of the frame, and by turning the hand wheel the sleeve 12 may be moved radially onits axis 7, the spring 16 tending to keep the adjustment fixed but permitting limited outward movement. The lower portion of the sleeve is provided with a yoke 18 within which a shaft 19 is journaled. A knurled feed roller 21 is fixed on the shaft so that the axis of taneously rotation 22 of the feed roller intersects the axis 7, which also passes midway between the lateral faces of the roller. On the end of the shaft 19 is a beveled ear 23 in mesh with a similar ear 24 fixe on a shaft 26, which is journa ed in the sleeve 12 and extends upwardl therethru and thru the coil springs 16 an bridge plate 17, and thru a gear 27 splined on the. end thereof. The

ear 27 is rovided with a hub 28 which is ournaled 1n the upper end of the frame member 3. Rotation of the gear 27 thus effects the rotation of the feed roller 21 and a large gear 31 having its bearing on the end of the by the collar 32, provides means for simuldriving all three of the gears 27, so that the feed rollers 21 are all driven at the same speed. A spur gear 33 bolted to the side of the gear 31 meshes with the pinion of a power shaft 34 turned by any suitable prime mover.

Means are also provided for turning the shafts 6 simultaneously, to adjust the angularity of the feed rollers, that is to say, the angle which the axis 22 makes with the plane determined by the axis 7 and the axis 9. Fixed on each hollow shaft 6 is a segment of a gear 36 adapted to be meshed with a gear 37 mounted for rotation on the end of the barrel 4, opposite the mounting of the gear 31. The gear 37 is retained on the barrel by a collar 38 provided with brackets 39, in which the hand wheel controlled shaft 41 is journaled. The shaft 41 is provided with a worm 42 engaging worm teeth formed on the hub of the gear 37. Rotation of the shaft 41 by the hand wheel effects a turning of the gear 37 and a simultaneous movement of each of the hollow shafts 6 about their respective axes 7. Because of the irreversible character of the worm the shafts 6 are retained in their adjusted position without additional locking means.

From the above it will be clear that the feed rolls may be adjusted radially to engage a pipe of any desired size within the range 0 the machine and by then backing off the hand wheel a trifle, the rolls are resiliently held against the pipe by the springs 16 which give sufficiently to permit the rol s to accommodate themselves to any inequalities in the surface of the pipe. The angularity of the feed rolls is then adjusted in accordance with the width of the covering strip and the amount of the lap, if any, by the hand wheel 40. Rotation of the gear 31 effects a simultaneous rotation of the feed rollers and the rotation and axial progress thru the machine of the pipe.

Means are also provided for feeding a str'i of covering material impregnated with hot bituminous compound to the pipe. Arranged ad'acent the mechanisms ust described is e framework comprising a tank barrel 4, on which it is retained H 51 in which a quantity of material such as asphalt may be heated by any suitable source of heat in the fire-box 52 formed in the lower (portion of the frame. Elements 53 dispose on the frame are provided with means for mounting a roll 54 of the material to be wound on the pipe. This material 55 is led over a guide roller 57 downwardly into the body of hot asohalt over the roller 58 then upwardly past the scraping bars 59 which remove the surplus material clinging to the strip and over the aide roller 61, which is a justable vertical y on the slideways 62, by means of the screw 63. The strip then passes to the pipe at an angle determined by the pitch of the helix characterizing the wrapping as it is ap lied.

In Figs. 1 and 2 the feed rol ers are shown at such a setting that only rotation of the pipe would be effected, but under service conditions it is obvious that the rotational axis of the roller 61 must be in parallelism with the rotational axis of the rollers 21, since the angularity of the feed roller axis 22 determmes the pitch of the spiral winding, and the roller 61 must of course be perpendicular to the direction in which the winding strip is delivered. The first length of pipe is fed thru the feed rollers and the winding strip started by hand. As the end of the piece approaches the feed rollers, a suitable plug is inserted and another length of pipe attached. The operation of the machine is thus substantially continuous. The lengths of pi e are separated later as desired by cutting t ru the covering and removing the connecting plug.

The apparatus of our invention is particularly suitable for covering fabricated or cast pipes of varying diameters and may readily be adjusted to pipes of different sizes and to different conditions in the winding of the covering strip. A special factor of usefulness of our machine lies in the fact that it may be set up and operated at the point where the pipe is to be used.

We claim:

1. In a machine for wrapping cylindrical objects, a feed roller, means for adjusting said feed roller about an axis perpendicular to its axis of rotation, and means independent of said objects for rotating said feed roller.

2. In a machine for wra ping cylindrical objects, a yoke, a feed roller ournaled in said yoke, means for adjusting said yoke about an axis perpendicular to the rotational axis of said feed roller, and means independent of said objects for rotating said feed roller.

3. In a machine for wrapping cylindrical objectska yoke, a feed r0 ler ournaled in said yo e, means for adjustably turnin said yoke about an axis perpendicular to t e rotational axis of said feed roller and for fixing said yoke in the adjusted position, and means independent of said objects for rotating said feed roller.

4. n a machine for wrapping cylindrical objects, a feed roller, means for adjusting said feed roller about an axis perpendicular to its axis of rotation, means independent of said objects for rotating said feed roller, and means for adusting the position of said feed roller in sai erpendicular axis.

5. In a machine ibr wrapping cylindrical objects, a feed roller, means for adjusting said feed roller about an axis perpendicular to its axis of rotation, means inde endent of said objects for rotating said eed roller, means for adjusting the osition of said feed roller in said per en icular axis, and means for resiliently ho ding said feed roller in the adjusted position.

6. In a machine for wrapping cylindrical objects, a yoke, a feed roller ournaled in said yoke, means for rotating said feed roller to propel said objects therepast, means for turning said yoke about an axis erpendicular to the rotational axis of said feed roller, and means for axially adjusting the position of said yoke.

7. In a machine for wrapping cylindrical objects, a frame, a hollow shaft journaled in said frame, means for turnin said shaft on its journal axis, a sleeve axia ly slidably mounted in said shaft for rotary movement therewith, means for moving said sleeve longitudinally in said shaft, a feed roller mounted on said sleeve, and means for rotatin said feed roller.

8. In a machine for wrappin objects, a frame, a hollow sha t journaled in said frame, means for turnin said shaft on its journal axis, a sleeve axia ly slidably mounted in said shaft for rotary movement therewith, means for moving said sleeve longitudinally in said shaft, a feed roller mounted on said sleeve, a driving shaft arranged in said sleeve, means for rotating said driving shaft, and drivin mechanism connecting said driving sha t and feed roller.

9. In a machine for wrapping cylindrical objects, a frame, a hollow shaft journaled in said frame, means for turning said shaft on its journal axis, a sleeve, a sleeve axially slidably mounted in said shaft for rotary movement therewith, means for moving'said sleeve longitudinally in said shaft, a feed roller mounted onsaid sleeve, a gear journaled on said frame, a drivin shaft in said sleeve slidably mounted in said gear for rotation therewith, driving mechanism connecting said driving shaft and feed roller and means for driving said gear.

10. In a machine for wra ping cylindrical objects, a frame, a hollow s ft ournalcd in said frame means for turning said shaft on its journal axis, a sleeve axially slidably cylindrical mounted in said shaft for rota movement therewith, means for moving sai sleeve longitudinally in said mounted on said sleeve, means for rotating said feed roller, means for axially adjusting said sleeve in said shaft, and a spring interposed between said sleeve and frame.

11. In a machine for wrappi "cylindrical objects, a frame, a hollow shiii t journaled in said frame, a gear segment on said shaft, :1 gear in mesh with said segment, a worm for turning said gear, a feed roller mounted on said shaft for rotary movement therewith and axial movement in res ect thereof, and means for driving said fee roll.

12. In a machine for wra ping cylindrical objects, a yoke, a feed ro er ournaled in said yoke, means inde endent of said objects for rotating said eed roller, means for turnin said yoke about an axis perpendicular to tie rotational axis of said feed roller, and resilient means against axial movement.

13. In a machine for wrapping cylindrical objects a frame, a plurality of feed rollers circumferentially spaced in said frame, means for simultaneously rotating said feed rollers, and means for simultaneous] adjusting the axis of rotation of each 0 said feed rollers to any position from coincidence with a plane passing thru the longitudinal axis of said object to perpendicularity with said plane.

14. In a machine for cal objects, a frame, a pluralit of feed rollers circumferentially space in said frame, means for simultaneously rotating said feed rollers, means for simultaneously adjusting the axis of rotation of each of said feed rollers to any position from coincidence with a plane passing thru the longitudinal axis of said object to perpendicularit with said plane, and means for ad'usting 516 position of said feed rollers radially from the axis of said object.

15. In a machine for wrapping cylindrical objects, a frame, a plurality of feed rollers circumferentially spaced means for simultaneously rotating said feed rollers, means for simultaneously adjusting the axis of rotation of each of said feed rollers to any position from coincidence with a lane assmg thru the longitudinal axis of said ob ect to per ndicularity with said plane, means for adjusting the position of feed rollers radially from the axis of wrapping cylindrisaid for holding said yokeshaft, a feed roller,

in said frame,

said object, and resilient means tending to a sleeve axially slidably mounted in each shaft for rotary movement therewith, means for moving each sleeve longitudinally in its shaft, a feed roller mounted on each sleeve, a driving shaft arranged in each sleeve, means for simultaneously rotating said driving shafts, and drivin mechanism connect ing each driving shaft and its associated feed roller.

17. In a machine for wrapping cylindrical objects, a frame, a plurality of hollow shafts journaled radially in said frame about the longitudinal axes of' the object to be wrapped, a ar segment on each of said shafts, a gear in mesh with said segments, means for turning said .gear to adjust said shafts simultaneously about their respective journal axes and for fixing the shafts in the adjusted sitions, a sleeve axially slidably mounted in each shaft for rotary movement therewith, means for longitudinally adjusting each sleeve in its shaft, a feed roller mounted on each sleeve, a driving shaft arran ed in each sleeve, agear in which each sha t is slidably mounted for rotation therewith, a driving gear in mesh with the last named gears and driving mechanism connecting each driving shaft and its associated feed roller.

18. A machine for wrapping cylindrical objects, comprising a feed roller for engagin said object, means for rotating said feed -ro er to propel said objects therepast, means for adjusting said feed roller about an axis perpendicular to its axis of rotation to vary the ratio between the speed of rotation and the axial movement of the object, and means for feeding a strip of wrapping material to said object.

19. A machine for wrapping cylindrical objects, comprising a feed roller for enga in said object, means for rotating said feed roller, means for adjusting said feed roller about'an axis perpendicular to its axis of rotation to vary the ratio between the speed of rotation and the axial movement of the object, a body of fluid, and means for feeding a strip of wrapping material thru said fluid to said object.

20. In a machine for wrapping cylindrical objects, a frame, a plurality of feed rollers circumferentially spaced in said frame, means for simultaneously rotating said feed rollers, means for simultaneously adjusting the axis of rotation of each of said feed rollers to any position from coincidence with a plane assing thru the lon itudinal axis of said ohject to perpendicularity with said plane, a body of fluid, and means for feedin a strip of wrapping material thru said fluid to the object eing wrapped;

21. A machine for wrap ing pipe, comprisin a frame, a plura ity of sleeves goal-nailed radially in said frame about the ongitudinal axis of the i e, means for simultaneously turning said s eeves on their respective journal axes, a feed roller to engage said pipe mounted on each sleeve, a drive shaft arranged in each sleeve and operatively connected to the associated feed roller, means for simultaneously rotating said driving shafts to effect the rotation of said feed rollers and the resultant rotation of said pipe, and means for feeding a strip of wrapping material to said pipe.

22. A machine for wrapping pipe with an impregnated covering, comprising. a frame, a plurality of sleeves journaled radially in said frame about the longitudinal axis of the pipe, m'eans for simultaneously turning said sleeves on their journal axes, a feed roller to engage said pipe mounted on each sleeve, a drive shaft arranged in each sleeve, and operatively connected to the associated feed roller, means for simultaneously rotating said drivin shafts to effect the rotation of said feed rol ers and the resultant rotation of said pipe, a body of impregnating material, and rollers over which a strip of covering material is led thru said impregnating material to said pipe.

In testimony whereof, we have hereunto set our hands the said LELAND S. Rosanna at San Francisco, California, this 13th day of June, 1922, and the said FRANK I. DOANE, at Los Angeles, California, this 15th day of June, 1922.

LELAND S. ROSENER. FRANK I. DOANE.

DISCLAIMER I,500,769.Leland 1S. Rosemr, San Francisco, and Frank I. Deane, Berkeley, Calif. PIPE-WRAPPING MACHINE. Patent dated July 8, 1924. Disclaimer filed July 16, 1936, by the assignee, The Parafim Oompam'zs, Inc. Hereb enters this disclaimer to claims 1,2, 3, 4, 5,6, 12, 18, and 19 of said patent.

[ Gazette Augmt 18, 1986.] 

